A word from Stephanie, the 'Shrek and Fiona' costume creator:

i made ears out of headband and green material
painted hubby and i in green
sprayed my hair redish color
i took a shirt and cute it into a vest for my hubby his a big guy so had issue finding anything that would fit also cut off bottom of shirt to make the belt
i found a dress at salvation army for $2 worked perfect XD
we put quit a bit of money into it but was worth it had a family Halloween party last weekend were we won best costume contest XD